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Analysis Study Research Paper | Petroleum Engineering | China | Volume 12 Issue 3, March 2023

Evaluation Method for Gas Injection and Production Capacity of PG2 Gas Storage

Zhicong Zhong

Abstract: PG2 gas storage is a gas storage rebuilt from a volatile oil reservoir, and its injection-production capacity evaluation method has a certain guiding role for other gas storage of the same type. According to the gas reservoir characteristics of PG2 gas storage, the node analysis method is used to evaluate the injection and production capacity of PG2 gas storage. The critical liquid carrying flow rate and erosion flow rate are coupled to the inflow and outflow curve, and the reasonable injection and production gas volume of the gas well is ultimately determined through the coordination point and limit curve of the inflow and outflow curve. Research shows that PG2 gas storage is suitable for 4 ? Size of tubing with a reasonable gas production rate of 40 ? 104~ 70 ? 104m3/d, with a reasonable gas injection rate of 48 ? 104 ~ 82 ? 104m3/d? This study provides a reference for reasonably selecting completion tubing sizes and controlling wellhead pressure during multi cycle injection and production.

Keywords: Node analysis, Critical liquid carrying flow rate, Erosion flow rate, Injection production capacity analysis chart

Edition: Volume 12 Issue 3, March 2023,

Pages: 1204 - 1210